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AT instruction processing device and method thereof

A command processing and command technology, applied in the direction of electrical components, wireless communication, wireless network protocol, etc., can solve the problem of multi-channel AT receiving data mixing, and achieve the effect of reducing complexity, increasing reliability and reducing possibility

Inactive Publication Date: 2011-11-30
SIMCOM WIRELESS SOLUTIONS SHANGHAI
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] The technical problem to be solved by the present invention is to overcome the defect that multiple AT commands are mixed in the prior art after multiple AT commands are sent, and provide an AT command processing device and method thereof that increase the reliability of receiving AT reply data

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  • AT instruction processing device and method thereof
  • AT instruction processing device and method thereof

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Embodiment Construction

[0026] The preferred embodiments of the present invention are given below in conjunction with the accompanying drawings to describe the technical solution of the present invention in detail.

[0027] As we all know, when developing a wireless module, it is necessary to use MCU or single-chip microcomputer to communicate with the wireless module. The present invention is a development based on this architecture, and the MCU in this embodiment uses ARM. like figure 1 As shown, the AT command processing device 1 of the present invention includes: a sending module 11 for sending AT commands, and only one AT command is sent at any one time; a receiving module 12 for receiving and analyzing AT commands, and according to Different situations of received characters trigger different tasks of the application layer; the application processing module 13 is used for parsing the content of the short message in the AT command, and performs corresponding operations according to different co...

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Abstract

The invention discloses an AT command processing device and method, the device includes: a sending module, used to send AT commands, and only one AT command is sent at any time; a receiving module, used to receive and analyze AT commands, and Trigger different application layer tasks according to different situations of received characters; at the same time, a data receiving method based on the timeout mechanism of μCOS-II is realized. The application processing module is used for analyzing the content of the short message in the AT command, and performs corresponding operations according to different contents of the short message. The invention effectively reduces the loss probability of AT reply data and increases the reliability of receiving AT reply data. Further, under μCOS-II, the complete separation of AT command sending and data analysis is realized. The possibility of AT command data mixing in the received data is reduced, and the complexity of parsing AT commands is reduced. Based on the principle of separation of AT command sending, data analysis and application processing tasks, it also provides convenience for subsequent application additions.

Description

technical field [0001] The present invention relates to an AT command processing device and its method, in particular to an AT command processing device and its method based on AT command transmission, data analysis and application processing tasks are separated, and at the same time realizes a μCOS-II-based The data receiving method of the timeout mechanism. Background technique [0002] Due to the provisions of the GSM protocol, in the reply message after executing the AT command to the wireless module, there is no unified end symbol for each command, which adds difficulty to the analysis of the reply message. The traditional method of parsing AT commands is to store all possible values ​​returned by sending AT commands, and parse them according to the newline end symbol of the returned message. Since there are usually a large number of AT commands in the application, a large amount of space needs to be occupied in the program. At the same time, after multiple AT command...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H04W4/14H04W80/00
Inventor 陈刚
Owner SIMCOM WIRELESS SOLUTIONS SHANGHAI